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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: dialog.cpp
3 // Purpose: wxDialog class
4 // Author: AUTHOR
5 // Modified by:
6 // Created: ??/??/98
7 // RCS-ID: $Id$
8 // Copyright: (c) AUTHOR
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 #ifdef __GNUG__
13 #pragma implementation "dialog.h"
14 #endif
15
16 #include "wx/dialog.h"
17 #include "wx/utils.h"
18 #include "wx/frame.h"
19 #include "wx/app.h"
20 #include "wx/settings.h"
21
22 #include <wx/mac/uma.h>
23
24 // Lists to keep track of windows, so we can disable/enable them
25 // for modal dialogs
26 wxList wxModalDialogs;
27 wxList wxModelessWindows; // Frames and modeless dialogs
28 extern wxList wxPendingDelete;
29
30 #if !USE_SHARED_LIBRARY
31 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxPanel)
32
33 BEGIN_EVENT_TABLE(wxDialog, wxPanel)
34 EVT_SIZE(wxDialog::OnSize)
35 EVT_BUTTON(wxID_OK, wxDialog::OnOK)
36 EVT_BUTTON(wxID_APPLY, wxDialog::OnApply)
37 EVT_BUTTON(wxID_CANCEL, wxDialog::OnCancel)
38 EVT_CHAR_HOOK(wxDialog::OnCharHook)
39 EVT_SYS_COLOUR_CHANGED(wxDialog::OnSysColourChanged)
40 EVT_CLOSE(wxDialog::OnCloseWindow)
41 END_EVENT_TABLE()
42
43 #endif
44
45 wxDialog::wxDialog()
46 {
47 m_isShown = FALSE;
48 SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
49 }
50
51 bool wxDialog::Create(wxWindow *parent, wxWindowID id,
52 const wxString& title,
53 const wxPoint& pos,
54 const wxSize& size,
55 long style,
56 const wxString& name)
57 {
58
59 SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
60
61 if (!parent)
62 wxTopLevelWindows.Append(this);
63
64 if (parent) parent->AddChild(this);
65
66 if ( id == -1 )
67 m_windowId = (int)NewControlId();
68 else
69 m_windowId = id;
70
71 MacCreateRealWindow( title , pos , size , MacRemoveBordersFromStyle(style) , name ) ;
72
73 m_macWindowData->m_macWindowBackgroundTheme = kThemeBrushDialogBackgroundActive ;
74 return TRUE;
75 }
76
77 void wxDialog::SetModal(bool flag)
78 {
79 if ( flag )
80 {
81 m_windowStyle |= wxDIALOG_MODAL;
82
83 wxModelessWindows.DeleteObject(this);
84 }
85 else
86 {
87 m_windowStyle &= ~wxDIALOG_MODAL;
88
89 wxModelessWindows.Append(this);
90 }
91 }
92
93 wxDialog::~wxDialog()
94 {
95 m_isBeingDeleted = TRUE ;
96 wxTopLevelWindows.DeleteObject(this);
97
98 Show(FALSE);
99
100 if ( !IsModal() )
101 wxModelessWindows.DeleteObject(this);
102
103 // If this is the last top-level window, exit.
104 if (wxTheApp && (wxTopLevelWindows.Number() == 0))
105 {
106 wxTheApp->SetTopWindow(NULL);
107
108 if (wxTheApp->GetExitOnFrameDelete())
109 {
110 wxTheApp->ExitMainLoop() ;
111 }
112 }
113 }
114
115 // By default, pressing escape cancels the dialog
116 void wxDialog::OnCharHook(wxKeyEvent& event)
117 {
118 if (event.m_keyCode == WXK_ESCAPE)
119 {
120 // Behaviour changed in 2.0: we'll send a Cancel message
121 // to the dialog instead of Close.
122 wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
123 cancelEvent.SetEventObject( this );
124 GetEventHandler()->ProcessEvent(cancelEvent);
125
126 return;
127 }
128 // We didn't process this event.
129 event.Skip();
130 }
131
132 void wxDialog::Iconize(bool WXUNUSED(iconize))
133 {
134 // mac dialogs cannot be iconized
135 }
136
137 bool wxDialog::IsIconized() const
138 {
139 // mac dialogs cannot be iconized
140 return FALSE;
141 }
142
143 void wxDialog::DoSetClientSize(int width, int height)
144 {
145 wxWindow::DoSetClientSize( width , height ) ;
146 }
147
148 void wxDialog::DoGetPosition(int *x, int *y) const
149 {
150 wxWindow::DoGetPosition( x , y ) ;
151 }
152
153 bool wxDialog::IsModal() const
154 {
155 return (GetWindowStyleFlag() & wxDIALOG_MODAL) != 0;
156 }
157
158
159 bool wxDialog::IsModalShowing() const
160 {
161 return wxModalDialogs.Find((wxDialog *)this) != NULL; // const_cast
162 }
163
164
165 extern bool s_macIsInModalLoop ;
166
167 bool wxDialog::Show(bool show)
168 {
169 if ( !wxDialogBase::Show(show) )
170 {
171 // nothing to do
172 return FALSE;
173 }
174
175 if ( show )
176 {
177 // usually will result in TransferDataToWindow() being called
178 InitDialog();
179 }
180
181 if ( IsModal() )
182 {
183 if ( show )
184 {
185 DoShowModal();
186 }
187 else // end of modal dialog
188 {
189 // this will cause IsModalShowing() return FALSE and our local
190 // message loop will terminate
191 wxModalDialogs.DeleteObject(this);
192 }
193 }
194
195 return TRUE;
196 }
197
198 void wxDialog::DoShowModal()
199 {
200 wxCHECK_RET( !IsModalShowing(), _T("DoShowModal() called twice") );
201
202 wxModalDialogs.Append(this);
203
204 wxWindow *parent = GetParent();
205
206 // remember where the focus was
207 wxWindow *winFocus = FindFocus();
208 if ( !winFocus )
209 {
210 winFocus = parent;
211 }
212 if ( !winFocus )
213 {
214 winFocus = wxTheApp->GetTopWindow();
215 }
216 // TODO : test whether parent gets disabled
217
218 s_macIsInModalLoop = true ;
219
220 while ( IsModalShowing() )
221 {
222 while ( !wxTheApp->Pending() && wxTheApp->ProcessIdle() )
223 {
224 }
225 wxTheApp->MacDoOneEvent() ;
226 }
227
228 s_macIsInModalLoop = false ;
229
230 // TODO probably reenable the parent window if any
231
232 // and restore focus
233 if ( winFocus )
234 {
235 winFocus->SetFocus();
236 }
237 }
238
239
240 // Replacement for Show(TRUE) for modal dialogs - returns return code
241 int wxDialog::ShowModal()
242 {
243 m_windowStyle |= wxDIALOG_MODAL;
244 Show(TRUE);
245 return GetReturnCode();
246 }
247
248 // NB: this function (surprizingly) may be called for both modal and modeless
249 // dialogs and should work for both of them
250 void wxDialog::EndModal(int retCode)
251 {
252 SetReturnCode(retCode);
253 Show(FALSE);
254 }
255
256 // Standard buttons
257 void wxDialog::OnOK(wxCommandEvent& event)
258 {
259 if ( Validate() && TransferDataFromWindow() )
260 {
261 EndModal(wxID_OK);
262 }
263 }
264
265 void wxDialog::OnApply(wxCommandEvent& event)
266 {
267 if (Validate())
268 TransferDataFromWindow();
269 // TODO probably need to disable the Apply button until things change again
270 }
271
272 void wxDialog::OnCancel(wxCommandEvent& event)
273 {
274 EndModal(wxID_CANCEL);
275 }
276
277 void wxDialog::OnCloseWindow(wxCloseEvent& event)
278 {
279 // We'll send a Cancel message by default,
280 // which may close the dialog.
281 // Check for looping if the Cancel event handler calls Close().
282
283 // Note that if a cancel button and handler aren't present in the dialog,
284 // nothing will happen when you close the dialog via the window manager, or
285 // via Close().
286 // We wouldn't want to destroy the dialog by default, since the dialog may have been
287 // created on the stack.
288 // However, this does mean that calling dialog->Close() won't delete the dialog
289 // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
290 // sure to destroy the dialog.
291 // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
292
293 static wxList closing;
294
295 if ( closing.Member(this) )
296 return;
297
298 closing.Append(this);
299
300 wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
301 cancelEvent.SetEventObject( this );
302 GetEventHandler()->ProcessEvent(cancelEvent); // This may close the dialog
303
304 closing.DeleteObject(this);
305 }
306
307 // Destroy the window (delayed, if a managed window)
308 bool wxDialog::Destroy()
309 {
310 wxCHECK_MSG( !wxPendingDelete.Member(this), FALSE,
311 _T("wxDialog destroyed twice") );
312
313 wxPendingDelete.Append(this);
314 return TRUE;
315 }
316
317 void wxDialog::OnSysColourChanged(wxSysColourChangedEvent& event)
318 {
319 SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
320 Refresh();
321 }
322